Material-transferring apparatus



E. G. CARR.

MATERIAL TRANSFERRING APPARATUS.

APPLICATION FILED MAR. 8, 1918.

1 ,349 ,8 1 3. Patented Aug. 17, 1920.

2 SHEETS-SHEET I.

E. 'G. CARR.

MATERIAL TRANSFERRING APPARATUS.

APPLICATION FILED MAR a, 1918.

'1 349, 8 1 3 Patented Aug. 17, 1920.

2 SHEETSSHEET 2.

15 mm @WZL UNITED STATES PATENT OFFICE.

EDWARD G. CARR, OF CLEVELAND, OHIO, ASSIGNOR TO THE LAKEWOOD ENGINEER- ING COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

MATERIAL-TRANSFERRING APPARATUS.

Application filed March 8, 1918.

To all whom it may concern:

Be it known that I, EDWARD G. CARR, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in MateriaLlransferring Apparatus, of which the following is a specification, reference being bad to the accompanying drawing, forming a part thereof.

This invention relates to material transferring apparatus and the object of the invention is to improve material transferring apparatus in the manner to be hereinafter described and claimed.

Referring to the drawings which accompany this specifi -ation and form a part hereof, which drawings illustrate an embodiment of this invention and on which drawings the san'ie reference characters are used to designate the same parts wherever they may appear in each of the several views, Figure l is an end elevation of a concrete mixer with the invention applied thereto; Fig. 2 is a view similar to Fig. 1 but showing parts in different positions; Fig. 3 is a side elevation; and Fig. 4: is a plan view. The concrete mixer is illustrated schematically and all parts not necessary to a complete understamling of this invention are omitted from the drawings so far as practicable.

Referring to the drawings, the reference numeral 1 designates a mixing drum. 2 a steam engine and 3 a steam boiler which are all mounted upon a frame or wheeled support 4, and form a well-known type of con crete mixer. A charging hopper 5 is illus trated as pivoted upon a fulcrum 6 adjacent to one end and the charging hopper can be raised into the position shown by Flgs. 1 and 3 by the cable 7 which is operated by the power mechanism, or steam engine 2, in the ordinary manner. The charging hopper is unbalanced and, when the cable 7 is slacked, falls by gravity. The power of the falling charging hopper is utilized to lift a material containing receptacle and not only is waste power utilized but an absolute t1ming of movements and positions 1s insured between the charging hopper and the material containing receptacle 8. V

A derrick composed of a mast 9 and a. boom 10 is supported upon the whecledsupport 4 preferably by a ball and socket 101m;

Specification of Letters Patent.

Patented Aug. 17, 1920.

Serial No. 221,142.

11 and the upper end of the mast 9 can be adjusted so that the mast will be truly vertical or inclined at the will of the user. It is preferred to have the mast 5) truly vertical because then there is no tendency for the material containing receptacle 8 to swing the boom 10 and the swinging of the boom will be under complete control. liy inclining the mast 9, however, the weight of the material containing receptacle 8 will swing the boom 10 in a manner well-known to those accustomed to use derricks.

In the construction illustrated drawings the boom 10 is connected by the cable 12 with the charging hopper 5 so that the boom is lifted as the charging hopper drops and the boom can drop as the charging hopper is raised. The end of the cable 12 can be secured at different distances from the fulcrum (3 by connecting it with different holes in the anchor 13 fastened to the charging hopper 5. An adjustment is thus provided for regulating the lift of the boom. The lifting power afforded by the weight of the charging hopper 5 can also be adjusted in the same manner as any change of the cable 12 on the anchor 13 affects both the lift of the boom and the power applied to the boom. The power. however. is primarily regulated or adjusted by the number of times the cable 12 is passed around pulleys 14; and 15 connected with the mast and boom, and. of course. the lift of the boom can be regulated or adjusted in the same manner. it is preferred to use a single cable 16 which provided with a book 17 and which passes over a pulley 18 for booking on to the bail 180 of the material containing receptacle. H. Two rings 1.) and 20. which are somewhat larger in diameter than the boom 10, are placed on the boom and connected by a short link 21. The end of the cable 16 is fastened to the lower part of the ring 19 and tension on the cable will pull the rings into reversely inclined diagonal positions, as shown, and clamp the cable to the boom. The rings can be readily slipped up or down on the boom by simply pushing them into parallelism and turning them so that they are less inclined to the boom.

The mast 9 can rotate in a head 22 which engages a guide A screw 24 engages with a fixed screwthreaded block or nut 25 and passes through a hole in a lug 26 on the head 22. Collars 27 and 28 secured to the by the screw on opposite sides of the lug 26 cause the head 22, and the upper end of the mast 9, to move when the screw is rotated. A chain wheel 29 and a chain 30 enable the screw to be readily rotated by a person standing on the ground.

A ack 31 may be provided to afford a firm support under the mast 9 and is preferably pivotally connected to the wheeled support 4: so that the wheeled support can be moved without first releasing the jack.

The concrete mixer illustrated by the drawings may be of any preferred type and may be self propelled or not. The steam engine and boiler may be replaced by any other suitable form of power apparatus and various changes may be made in the specific constructions illustrated without departing from the principles of this invention.

The operation of the apparatus will be readily understood. The concrete mixer is placed in position, the jack 31 set and the mast 9 adjusted to a vertical position by pulling on the chain 30. With the parts in the positions shown by Fig. 1 of the drawings,

the hook 17 has been engaged with the bail.

180 and the rings 19 and 20 slipped down on the boom 10 until the cable 16 is taut. The charging hopper 5 is now lowered or permitted to fall and its weight lifts the boom 10 and the material containing receptacle 8. The boom and the material containing receptacle are now swung around over the charging hopper 5 and the material is dumped from the receptacle into the hopper. The boom and receptacle are now swung back to their original positions and, when the hopper 5 is lifted, the receptacle 8 will be lowered onto the truck. The rings 19 and 20 are slipped up the boom and the hook 17 disengaged from the bail 180, another receptacle is brought into position and engaged with hook 17 and the operation is repeated. It should be particularly noted that the material containing receptacle is not lifted until the charging hopper 5 is down so there is a perfect timing between the positions and movements of the receptacle and the hopper and there is no chance of an accident from a premature swinging around of the material containing receptacle.

What is claimed is:

1. In material transferring apparatus, the

combination with a hopper of means for lifting the same, a boom and flexible means connecting the hopper and the boom to raise the boom when the hopper falls and to lower the boom when the hopper is lifted.

2. In material transferring apparatus, the combination with a hopper of means for lifting the same, a derrick composed of a mast and a boom, means for adjusting the mast with respect to the vertical, and means connecting the hopper and the boom to raise the boom when the hopper falls and to lower the boom when the hopper is lifted.

3. The combination with a concrete mixer provided with a hopper and means for lifting the same of a boom and flexible means connecting the hopper and the boom to raise the boom when the hopper falls and to lower the boom when the hopper is lifted.

4. The combination with a concrete mixer provided with a hopper and means for lifting the same of a derrick composed of a mast and a boom, means for adjusting the mast with respect to the vertical, an anchor sccured to the hopper, a cable secured to said anchor and said boom, and a hook supported by said boom.

5. The combination with a concrete mixer provided with a hopper and means for lifting the same of a derrick composed of a mast and a boom, a cable connecting the hopper and the boom, and a jack to support the mast.

(3. The combination with a frame adapted to be moved from place to place, of a hopper supported thereby, means for lifting the hopper, a derrick frame connected with the hopper supporting frame and means connected with the hopper and extending to th derrick frame and adapted to lift a receptacle when the hopper falls, to load the hopper.

7. In combination a support, a boom mounted to swing horizontally thereon, an operating cable connected to said boom, a load receptacle suspended from said boom, a hopper, means to raise and permit lowering of said hopper, and means including said cable and connecting said hopper and said receptacle whereby the lowering of the hop per will raise the receptacle.

In witness whereof I hereto ailix my signature.

EDWARD G. CARR. 

